New data on chromosomes of Chalcidoidea (Hymenoptera)

Gokhman, Vladimir E.; Gumovsky, Alex

doi:10.1134/s0013873813010053

Cited by 3 publications

(4 citation statements)

References 10 publications

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“…The number of larger metacentrics observed in these chalcids also corresponded with the above-mentioned scenario. Analogously, two studied members of the genus Sycophila Walker, 1871 from the same family, namely, S. submutica (Thomson, 1876) and S. biguttata (Swederus, 1795), have n = 8 and 9 respectively (Gokhman and Mikhailenko 2008;Gokhman and Gumovsky 2013). Furthermore, n = 10 is characteristic of both Metaphycus flavus (Howard, 1881) and M. luteolus (Timberlake, 1916) (Encyrtidae), but n = 9 and 5 were respectively found in M. angustifrons Compere, 1957and M. stanleyi Compere, 1940(Gokhman 2010.…”

Section: Chromosomal Mutationsmentioning

confidence: 99%

“…Among Chalcidoidea, meiotic chromosomes were examined in some detail in a few dozen members of the families Eulophidae, Aphelinidae, Encyrtidae, Eupelmidae, Eurytomidae, Torymidae s.l. (including Megastigmidae) and Pteromalidae (Fusu 2009(Fusu , 2017Gokhman 2009 and references therein, Gokhman and Gumovsky 2013;Gokhman et al 2014b). Specifically, chalcid chromosomes can form rod-like, crosslike or ring-like bivalents in diplotene, as in other members of the order Hymenoptera.…”

Section: General Notesmentioning

confidence: 99%

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Chromosomes of parasitic wasps of the superfamily Chalcidoidea (Hymenoptera): An overview

Gokhman¹

2020

CCG

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An overview of the current knowledge of chromosome sets of the parasitoid superfamily Chalcidoidea is given. Karyotypes of approximately 240 members of this group, i.e. just above one percent of described species, are studied up to now. Techniques for obtaining and analyzing preparations of chalcid chromosomes are outlined, including the so-called “traditional” and “modern” methods of differential staining as well as fluorescence in situ hybridization (FISH). Among the Chalcidoidea, the haploid chromosome number can vary from n = 3 to n = 11, with a clear mode at n = 6 and a second local maximum at n = 10. In this group, most chromosomes are either metacentric or submetacentric, but acrocentrics and/or subtelocentrics also can predominate, especially within karyotypes of certain Chalcidoidea with higher chromosome numbers. The following main types of chromosomal mutations are characteristic of chalcid karyotypes: inversions, fusions, translocations, polyploidy, aneuploidy and B chromosome variation. Although karyotype evolution of this superfamily was mainly studied using phylogenetic reconstructions based on morphological and/or molecular characters, chromosomal synapomorphies of certain groups were also revealed. Taxonomic implications of karyotypic features of the Chalcidoidea are apparently the most important at the species level, especially among cryptic taxa.

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Section: Chromosomal Mutationsmentioning

confidence: 99%

Section: General Notesmentioning

confidence: 99%

Chromosomes of parasitic wasps of the superfamily Chalcidoidea (Hymenoptera): An overview

Gokhman¹

2020

CCG

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“…Most of the economically important species of this relatively large family are herbivores (Zerova, 1978), but considerable chromosomal variation has been so far recorded only in the parasitoids from the genera Eurytoma Illiger and Sycophila Walker (Gokhman and Mikhailenko, 2008;Gokhman and Gumovsky, 2012). Most representatives of the former genus have n = 10 but there are also some species with n = 7, 6, and 5.…”

Section: Eurytomidaementioning

confidence: 99%

Results and prospects of the chromosomal study of the main groups of economically important Chalcidoidea (Hymenoptera)

Gokhman

2015

Entmol. Rev.

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A brief review of the results of the chromosomal study of the main economically important groups of parasitoids of the superfamily Chalcidoidea is presented. Methods of chromosomal analysis can be used to study the species complexes within taxonomically complicated groups, to identify adult and immature chalcids to species, to identify insects in laboratory stocks and mass-rearing cultures, to study sex ratios of immature stages, and to reveal specific sex-ratio distorters with chromosomal localization. There are reasons to believe that chromosomal analysis will be successfully used in the future for studying not only economically significant chalcids but also other practically important groups of parasitoid Hymenoptera.

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“…Specifically, two reviews of Eulophidae karyology were published in the 2000s ( Gokhman 2002 , 2004 ), and a number of other papers on this subject appeared since that time (e.g. Gebiola et al 2012a , Gokhman and Gumovsky 2013 , and references therein) including a monograph on karyology of hymenopteran parasitoids ( Gokhman 2009 ). Furthermore, certain members of the family have become objects of an advanced cytogenetic study ( Bolsheva et al 2012 ).…”

Section: Introductionmentioning

confidence: 99%

Karyotypes of parasitic wasps of the family Eulophidae (Hymenoptera) attacking leaf-mining Lepidoptera (Gracillariidae, Gelechiidae)

Gokhman

Yefremova²,

Yegorenkova³

2014

CCG

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Karyotypes of eleven parasitoid species of the family Eulophidae were examined, namely, Chrysocharis laomedon (Walker, 1839) (2n = 10), Chrysocharis sp. aff. laomedon (n = 5, 2n = 10), Chrysocharis sp. aff. albipes (Ashmead, 1904) (2n = 12), Mischotetrastichus petiolatus (Erdös, 1961) (n = 6, 2n = 12), Minotetrastichus frontalis (Nees, 1834) (n = 5, 2n = 10), Cirrospilus pictus (Nees, 1834) (2n = 12), Hyssopus geniculatus (Hartig, 1838) (2n = 16), Sympiesis gordius (Walker, 1839) (2n = 12), S. sericeicornis (Nees, 1834) (2n = 12), Pnigalio agraules (Walker, 1839) (2n = 12 + 0–2B) and Pnigalio gyamiensis Myartseva & Kurashev, 1990 (2n = 12 + 0–6B) reared from Phyllonorycter acerifoliella (Zeller, 1839), Ph. apparella (Herrich-Schäffer, 1855), Ph. issikii (Kumata, 1963) (Gracillariidae) and Chrysoesthia sexguttella (Thunberg, 1794) (Gelechiidae). Chromosome sets of all species except P. agraules and P. gyamiensis were studied for the first time. B chromosomes were detected in the two latter species; in P. gyamiensis, the maximum number of B chromosomes represents the highest value known for parasitic wasps to date.

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New data on chromosomes of Chalcidoidea (Hymenoptera)

Cited by 3 publications

References 10 publications

Chromosomes of parasitic wasps of the superfamily Chalcidoidea (Hymenoptera): An overview

Chromosomes of parasitic wasps of the superfamily Chalcidoidea (Hymenoptera): An overview

Results and prospects of the chromosomal study of the main groups of economically important Chalcidoidea (Hymenoptera)

Karyotypes of parasitic wasps of the family Eulophidae (Hymenoptera) attacking leaf-mining Lepidoptera (Gracillariidae, Gelechiidae)

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